Pourvakhshoori Negar, Poursadeghiyan Mohsen, Khankeh Hamid Reza, Harouni Gholamreza Ghaedamini, Farrokhi Mehrdad
1Health in Emergency and Disaster Research Center, University of Social Welfare and Rehabilitation Sciences, kodakyar Ave., daneshjo Blvd., Evin, Tehran, 1985713834 Iran.
2Department of Clinical Science and Education, Karolinska Institute, Stockholm, Sweden.
J Environ Health Sci Eng. 2020 Mar 16;18(1):279-284. doi: 10.1007/s40201-020-00463-2. eCollection 2020 Jun.
Global warming and air pollution are among the most important problems all over the world. Considering the key role of traffic officers who saliently deal with traffic management and are in full, constant and direct exposure to thermal stress and air pollution index, this study aims to investigate the simultaneous effects of these factors on the body temperature of traffic officers in the main squares of Tehran.
This study was conducted among 119 traffic officers who were working in 29 squares of Tehran, located near the active pollutant's stations during 2017. Samples were selected by the census method. Environmental parameters such as air temperature (dry and wet), radiation temperature, the level of air pollution in the main squares and characteristics of officers such as body temperature and the Wet-Bulb-Globe-Temperature (WBGT) index were evaluated. Data were analyzed through independent samples t-test and factorial ANOVA with a value of ≤ 0.05 in SPSS software.
There was no significant relationship between air pollution and ear temperature, but there was a statistically significant difference between the wet-bulb temperature and the ear temperature (t = 26.4, < 0.001). The interaction effect of air pollution and wet-bulb temperature on the ear temperature was also significant (F = 3.98, = 0.048).
Exposure to heat and air pollution affects body temperature, with its greatest impact on the temperature of the ear. More studies are recommended to be conducted in these field and other factors such as demographic and environmental factors at different times of the year should be investigated. Accordingly, some interventions should be implemented to reduce the vulnerability of officers based on the findings of the research.
全球变暖和空气污染是世界上最重要的问题之一。考虑到交通警察在交通管理中发挥的关键作用，他们完全、持续且直接暴露于热应激和空气污染指数中，本研究旨在调查这些因素对德黑兰主要广场交通警察体温的综合影响。
本研究在2017年期间对119名在德黑兰29个广场工作的交通警察进行，这些广场靠近活跃的污染物监测站。采用普查方法选取样本。评估了环境参数，如气温（干球温度和湿球温度）、辐射温度、主要广场的空气污染水平，以及警察的特征，如体温和湿球黑球温度（WBGT）指数。在SPSS软件中通过独立样本t检验和析因方差分析对数据进行分析，显著性水平设定为≤0.05。
空气污染与耳部温度之间无显著关系，但湿球温度与耳部温度之间存在统计学显著差异（t = 26.4，< 0.001）。空气污染和湿球温度对耳部温度的交互作用也显著（F = 3.98， = 0.048）。
暴露于高温和空气污染中会影响体温，对耳部温度影响最大。建议在该领域开展更多研究，并调查其他因素，如一年中不同时间的人口统计学和环境因素。据此，应根据研究结果实施一些干预措施，以降低警察的易感性。
